**FIREWORKS** The central problem of this unit involves sending up a rocket to create a fireworks display. This unit builds on the algebraic investigations of Year 1, with a special focus on quadratic expressions, equations, and functions.

**GEOMETRY BY DESIGN** provides students with historical knowledge about how people created mathematics, and in particular, geometry. Students use the ancient tools of straightedge and compass to do constructions, and ruler and protractor to make accurate drawings. The classical deductive system consisting of Euclid’s postulates and theorems is introduced to prove theorems about triangles and quadrilaterals.

**THE GAME OF PIG** Students develop a mathematical analysis for a complex game based on an area model for probability.

**DO BEES BUILD IT BEST?** Students study surface area, volume, and trigonometry to answer the question, “What is the best shape for a honeycomb?”

**SMALL WORLD, ISN'T IT?** Beginning with a table of population data, students study situations involving rates of growth, develop the concept of slope, and then generalize this to the idea of the derivative.